Computer restarts without error during gaming

[Wrath101]

Hi there everybody.

I have a problem with my newly built rig. Perhaps someone here could help?

The specs are as follows:

i5 2500k
p8z68-V
EVGA GTX 580
G.Skill 8gb 1600
Corsair HX650w

All hardware is completely stock. Not factory OC'd, nor manually OC'd.

The following problem occurs.

When I initially built the rig (~4 days ago) the computer would restart without warning, no BSOD no nothing after about 20 minutes of gaming in Crysis. At the time I was using an old silverstone PSU which apparently was not up to the task. I naturally assumed this was the problem. So I purchased the Corsair HX650 which should be more than enough to power a
single GTX 580 (correct?). Everything looked fine, I could play Crysis fine (longer than 20minutes). Then I tested the computer under Prime95. The computer would restart everytime within 2 minutes of starting the test -blend.

I _believe_ an energy saving feature of my motherboard was turned on, (the EPU - very confusing as the manual has the on/off switch backwards) so I deactivated that and everything seemed to be ok again. Could run Prime95 for 30+ mins without restart (blend) and so far 3 hours large FFT so I believed that this solved the problem.

Furmark tests went flawlessly for 40mins.

However once again, after an hour or so of gaming my computer restarted.

I should mention all temperatures are completely fine, CPU barely breaks 50C during torture testing with Prime95, and GPU 70C during ~40min Furmark.

Any help would be greatly appreciated. Built this rig after much long and hard work, and to have such a problem is a real kick in the teeth

Thanks

 

[henydiah]

- Uninstall driver vga from system it will make boot system.
- unplug power ac from psu
- Revome your 580 from pc
- and Try test use vga onbord first, of course install again driver vga onboard from cd stock .

 

[Wrath101]

UPDATE: In Event Viewer it states:

Critical 24-Oct-11 10:16:58 PM Kernel-Power 41 (63)
Critical 23-Oct-11 1:37:10 PM Kernel-Power 41 (63)
Critical 23-Oct-11 1:10:35 PM Kernel-Power 41 (63)
Critical 23-Oct-11 1:08:31 PM Kernel-Power 41 (63)
Critical 23-Oct-11 2:10:18 AM Kernel-Power 41 (63)
Critical 22-Oct-11 3:11:36 AM Kernel-Power 41 (63)
Critical 22-Oct-11 1:52:36 AM Kernel-Power 41 (63)
Critical 22-Oct-11 1:26:25 AM Kernel-Power 41 (63)

The system has rebooted without cleanly shutting down first. This error could be caused if the system stopped responding, crashed, or lost power unexpectedly.

I believe these coincide with my resets.

Does anyone know what these mean?


EDIT: Apparently these errors are often caused by conflicting audio drivers. Sure enough I have nVidia HD audio and RealTEK onboard audio drivers both active. I have since deactivated the nVidia HD Audio drivers. Praying this solves it. Seems weird that a Prime95 test would induce an error produced by an audio driver conflict, though.

 

[henydiah]

Prime95 just test cpu and ram not at driver/vga, many people success get pass in prime95 and cool temperature still freeze at big game .
Also Bad ram, driver can caused and pacth game can cause that

 

[Wrath101]

Memtest after 7 passes revealed no errors

 

[henydiah]

The ram it's ok, Now Try use vga onboard and test again, it's for to know which is gtx 580 had issue. Or try your another vga to your pc or test your vga at other pc (maybe your friend)